The time scale of the bottleneck?

I assume you are referring to where @glipsnort says,

The human genome is ~3.2 billion base pairs so that means 0.72% to 1.22% single-base substitutions when comparing human and chimpanzee genomes. (99.3% - 98.8% similarity)

So, from your reference, the answer to my question is that any less than 98.8% similarity is inconsistent with the evolution hypothesis. 95% is 4 times too much difference (5%/1.22%). Evolution is a faith because common ancestry doesn’t add up.